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MathGroup Archive 2007

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Re: Function as an argument

  • To: mathgroup at smc.vnet.net
  • Subject: [mg76725] Re: Function as an argument
  • From: Albert <awnl at arcor.net>
  • Date: Sat, 26 May 2007 04:39:05 -0400 (EDT)
  • References: <f36ddj$71m$1@smc.vnet.net>

dXdYdZdu wrote:
> Hi, I have problem. I want to do something like this:
> 
> ss[x_] = 2 + x^3 ;
> MyFunction[expression_] := Module[{}, Return[expression[2]]]
> Calling MyFunction[ss] will produce 10 and this is working case.
> 
> but this is what I can not do:
> 
> MyFunction[2 + x^3]
> 
> Is there a way to make this to work as well?
> 
> 

If you want to use a function as argument, then use one, like below:

MyFunction[2+#^3&]

Note that there is a difference between a function and an expression. 
Look up Function in the help browser to learn more about pure functions...

hth,

albert


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